.container {
  display: flex;
  align-items: center;
  height: 100vh;
  width: 90vw;

  .panel {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 80vh;
    border-radius: 50px;
    color: #fff;
    cursor: pointer;
    flex: 0.5;
    margin: 10px;
    position: relative;
    transition: all 700ms ease-in;
  }

  .panel h3 {
    font-size: 24px;
    position: absolute;
    bottom: 20px;
    left: 20px;
    margin: 0;
    color: #000;
    opacity: 0;
  }

  .panel.active h3 {
    opacity: 1;
    transition: opacity 0.3s ease-in 0.4s;
  }

  .panel.active {
    flex: 5
  }
}



@media (max-width: 480px) {
  .container {
    width: 100vw;
  }

  .panel:nth-of-type(4),
  .panel:nth-of-type(5) {
    display: none;
  }
}